# 10G problem within QSFP connector

**URL:** <https://community.solid-run.com/t/10g-problem-within-qsfp-connector/537>\
**Category:** NXP LX2160\
**Created:** [December 2, 2022, 7:16pm UTC](https://community.solid-run.com/t/10g-problem-within-qsfp-connector/537 "2022-12-02T19:16:37Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![dstepanov](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/dstepanov/32/144_2.png) [@dstepanov](https://community.solid-run.com/u/dstepanov)\
**Post date:** [December 2, 2022, 7:16pm UTC](https://community.solid-run.com/t/10g-problem-within-qsfp-connector/537/1 "2022-12-02T19:16:37Z")

</div>

Hi!

I’m using ClearFog Rev 1.3 with prebuilt ubuntu image (lx2160acex7\_2000\_700\_3200\_8\_5\_2-db443a1.img.xz) and trying to initialize 10G interface within QSFP connector (i’m using octopus DAC cable).  
Upon reboot i see this u-boot message:

```auto
Setting up retimer channels 1..4 as 10Gbps
ERROR: Retimer at address 0x22 not found
Net: eth0: DPMAC3@xgmii, eth1: DPMAC4@xgmii, eth2: DPMAC5@xgmii, eth3: DPMAC6@xgmii, eth4: DPMAC7@xgmii, eth5: DPMAC8@xgmii, eth6: DPMAC9@xgmii, eth7: DPMAC10@xgmii, eth8: DPMAC17@rgmii-id [PRIME]

```

There are 2 retimers (one for RX, one for TX) on ClearFog board and one of them is not found.  
After booting to linux i’m not able to initialize dpmac interface which is connected to QSFP:

```auto
root@localhost:~# ls-addni dpmac.3
Created interface: (object:dpni.1, endpoint: dpmac.3)

```

Created interface is empty and i can see these messages in dmesg:

```auto
[374.807152] fsl_dpaa2_eth dpni.1 (unnamed net_device) (uninitialized): Error connecting to the MAC endpoint
[375.396390] fsl_dpaa2_eth dpni.1 (unnamed net_device) (uninitialized): Error connecting to the MAC endpoint

```

And the same behavior for dpmac3-dpmac6 (all connected to QSFP)

Please point me how to enable these 10G interfaces.

Thanks!

---

<div class="post-metadata">

**Author:** ![wick](https://avatars.discourse-cdn.com/v4/letter/w/df788c/32.png) [@wick](https://community.solid-run.com/u/wick)\
**Post date:** [December 30, 2022, 2:04pm UTC](https://community.solid-run.com/t/10g-problem-within-qsfp-connector/537/2 "2022-12-30T14:04:53Z")

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You should probably send a ticket if QSFP has never worked on that board. The retimers are setup via i2c commands in u-boot (source is in /build/u-boot/board/solidrun/lx2160a/eth\_lx2160acex7.c) Failing to communicate over i2c needs further debugging…